The art and science of chassis building has come a long way in the last 10 years. With motors producing way more power than in
Things that are unique to these Chassis'
#1 All DMR chassis use Dave's original design cross-stering system. This, along with the ratio steering adjustment, give these chassis a tighter turning radius than any others we have seen.
Now you ask yourself "Why would I need a good turning radius on a drag bike?" Let's say you are pulling the line and at the last second you see a big rut that you don't want to run in, so you turn your front wheels to get the bike out of the ruts. Now you are sitting in the lights with the bike pointed off the track, so you take off and before
you are 30 feet out of the gate you've got the chop the throttle and straighten out the bike. In the time it takes to do that, you just lost .100 because you were not straight on the take off.
Here is the advantage. If in the last 90", you decide you want to move the bike over an entire bike width, you can do it and still be headed straight down the track.
#2 The next questions Dave is always asked is "With all that steering, doesn't it make the bike twitchy going down the track?" Well, here is where the geometry of the cross steering comes into play. The 20 degrees o f handle bar movement only makes 9 degrees of wheel movement. When you are going down a bumpy track, a little<
movement from you makes very little movement for the bike. It is only after you get past 20 degrees that the wheels start turning quicker. Because of the ratio adjustment, steering the DMR chassis can be easily and quickly adjusted to the rider's comfort, yet another sign that DMR designs with safety in mind.
#3 The ease of working on the chassis with respect to installing the motor: this will be one of the easiest chassis you will ever put a motor into. It takes Dave approximately 30 minutes to install the motor, carburetors, and pipes, and make it ready to go down the track. (not including tuning)
Charlie Ohton, owner of Ohton Racing, said, "Well, two of us put the bike together in one hour and could not find anything that needed to be done. Everything lined up with precision."
Scott Edick, long time drag racer posted, "What can I say. Is there any better way to start the weekend than a cell phone call saying there is a crate on the loading dock? I have been using Dave for years and I am impressed. Everything on this chassis is top notch. Now the only problem I have is to decide on paint, powder or chrome......First Class, Dave!"
When Dave designed the chassis, one thing he kept in mind was, if you've got 40 minutes to get the bike to the line, it better only take 20 to get it ready You will find that it only takes 4 tools to disassemble the entire bike.
All DMR chassis have corrected Ackerman Steering geometry.
The Ackerman concept is too have all four wheels rolling around a common point during a turn.
The example above shows that the inside front tire must turne a larger number of degrees that the outside front tire for this priciple to work.
This is what gives the DMR chassis (both rigid and suspended) a better handling feel than other after market chassis.
For specifications on any of these chassis, please veiw the right of this page and click on it's picture.
A - arms